Boiler Replacement Cost
£1,400–£7,000typical UK range. Last updated October 2026.
Which? puts new boiler installation at around £1,400 to £7,000. Every job is priced on survey. Gas engineers who do boiler installations
What each option costs
| Type | Typical cost | Notes |
|---|---|---|
| New boiler installation | £1,400–£7,000 | Typical range |
What affects the price
- Boiler type and output
- Whether the boiler moves
- Pipework, cylinder, controls, and flue changes
What’s included
- Boiler supply and fitting as quoted
- Commissioning by a suitably registered installer
Good to know
How long does it take? How long a replacement takes depends on the scope. A simple swap is quicker than a system change.
Do I need one? Replace a boiler when a qualified engineer confirms replacement is safer or better value than repair.
Before you book, read how to check a gas engineer is Gas Safe registered.
How to pay less
- Compare itemised like-for-like quotes
- Confirm controls, filters, disposal, and certification are included
